String trimmer attachment for a lawnmower



FIG. 1 is a front elevational view of a string trimmer attachment for alawnmower showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The lawnmower housing shown in broken lines in FIGS. 1-6 is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for a string trimmer attachment for a lawnmower,as shown and described.